Pipe-coupling



M. .l. COFFEY.

PIPE COUPLING.-

APPLICATION FILED FEB. s. 1919.

Patented July 22, 1919.

THE COLUMBIA PLANOGRAPH cm, WASHINGTON, D. c.

' them without disjoint. vide a joint which. willlbe tight under all Toall mama may coiicerm j I j Be it known that I, MICHAEL' J; QOFFEY,

NI $TATEST PATEN a OFFICE- amalgam; corrng; or Fitment, NEW roan,Assrqnonro '1.;A. :GILLESPIE COMPANY, or NEW Yoa ,,1\T. .Y.; ACORPORATION or DELAWARE.

. h ll imbma citizen o'fthe United States, residingat Freepo'n in thecounty of Nassau and State of New York, have invented and usefulImprovements inQPipe-"C'ofib' rt n new lings, of which thefollowingiisj'a specification. i j: This invention relates'ito couplingsfor p pes, and has' for one object a, construction v whereby the pipesections may be connected so as to permitjrelative movement betweenAnother obj ectof the invention is [to conditions. 1 W H! With these andother objects inviewmy V invention consists. of certain novel featuresof construction, combinationand arrange ment of partsas will beinorefully described and pointed outin theappended claims.

Infthe drawings,Figure 1 is a partial section through one form of jointwhich I haveselectecl for purposes of illustration;

2 :isa side elevation .of. a pair of pipe sections connected by the.form of joint illustrated in Fig .1; Fig. 3 is a sectional elevation on'the lined- 3 of, F ig...2, and Figfl is-a sectionaLelexfation of amodification ofmy novel form of jointm The corresponding partsarereferred to 1 nboth;the drawings and in the specification bysimilarreference characters. l I 1 Referring first to-the formof jointillustrated in Figs. 11,52. and 3, 10 and 12 are the ends of thesections of pipe to be joined.

.A. bell member 11 is riveted-to the end of 1 the section 12 so as tomake a tight joint 40 and the end of the section 10 projects into theend of the bell member 11 and thus becomes the spigot member of thejoint.

The end of the bell member 11 is flared outwardly to form a conicalopening as 18, and preferably the bell member 11 is coned so that thediameter "at its center is larger than at its end. It will be seen thatthis permits the spigot section 10 to be tilt/ed without interferencewith the bell member.

In order to form a tight joint between the bell member and the spigotmember I provide a rubber ring or gasket 19 and a follower ring 13.Bolts 14 provided with nuts 15 engage the follower ring 13 and the headof the bolt 14 is passed through a hole j of Letters Patent. I. PatentedApplication filed salary "5,1919. Serial no."275,1 17.

in a ring 20 also riveted to the "pipe section I Itwillbe seen that thetightening of the nuts '15 will force the follower ring 13 and therubber gasket 19 against theconical surfa'cels of the bellniember l v pf. In order 'pfoduce'la tight joint I "provide thefolloweif ring 13 withprojecting (ri g portion which is adaptedto extend "overforoutsicle ofthe outer diameter of thebelljjmember 11 "this ring 17 -'havi1 1g itsinward face 171 angular. I also provide -.a projectii1g:ring oathfollower l3 'a s at 16,

thisr'ing being within the circumference of .the bell member 11 andopposite the conical face The internal diameter crane fol- ;1O QIYITiHg.somewhat. larger than the external diaineter of the pipe section 10 so"as to "plfoiiicle a c learance between them.

As the nuts 15 are tightened it will, be

seen that the follower ring will be forced toward thebell member 11, andthat, by reason of the double projection on the follower r e 13-1 6- t iheng ke 19 is c mpres e in a number of;;directions so as' to produce atight. j oint which will not be brolicn'jwhen the pipe 10 ishmovedeither longitudinally or laterally. ,By reason of the conical face 1' 71 the. rubber is pinched between this face --and the external, surfaceofthe end of the bell memberas thefollower is drawn toward the bellmember. .Theprojection 16 is ineffect. a;1d0ub.1e-fac.ed projection,with one face extending upwardly-and the other down- .wardlyj As thisprojection is drawn against the gasket 19 aportion of the gasket will beforced downward against the pipe 10 and a portion will be forced upwardagainst the conical face 18'. The reaction from the motion of thefollower 13 against the conical face 18 will also force the rubber ofthe gasket 19 downward against the section 10. As originally inserted,the gasket will. have a relatively straight face at its rear side nextthe follower, and Fig. 1 shows the direction in which the rubber willflow into the clearance space between the follower and the section 10and between the face 171 and the outer diameter of the bell member 11.

While I have shown the bell member 11 as a separate piece, it will beobvious that it may be formed directly on the section 12.

Referring now to the modification shown in Fig. 4, such modification issubstantially the same as the joint shown in Fig. 1, except I coned sothat its middle diameter is larger- I bolts 14 passing through each ofthe folthat the bell member 11 is flared outwardly at the opposite endsand a flexible joint is provided at each end instead of one end of thebell member being rigidly connected to' one of the pipe sections, as inthe form shown in Fig. 1. In Fig. 1, 11 isthe bell member having eachend flared as at 118 and than either of the end diameters. This willpermit either of the pipe sections 110 or 112 j to be moved laterally orswung around the elastic joint without interference. A pair of thefollower rings 13 are provided, one

acting at each end of the bell member 11 against a gasket17 1, preciselyas hasbeen previously described in reference to Fig. 1,

' lowers, the nuts serving to draw them together and to'force theirrespective gaskets against the ends of the bell member 11.

What I claim and desire to'secure by Letters Patent of the United Statesis j 1; In a pipe joint of the kind described,

a bell member, a spigot member adapted to enter the bell member, theinterior surface of the bell memberbeing flared outwardly at one end toform a conical opening, a follower ring surrounding the spigot memberadjacent the end of the bell member, means to draw the follower ringtoward the bell member, and a rubber gasket between the follower ringand the end of the bell member, the follower ring having an innerprojecting ring portlon located opposlte the 1:3

which the rubber gasket is pressed by the end ofthe bell member when thefollower is drawn toward the bell membelu- 2. In a pipe joint of thekind described,

a bell member, a pair of spigotfmembers Copies of this patent may beobtained for adapted to enter the endsof the bell mem ber, the interiorsurface of each end of the bell member being flared outwardly to form aconical opening, a pairof follower rings,

each surrounding one of the spigot mem- V "hers-adjacent one of the endsof the bell member, means to draw the followerrings toward the bellmember, a rubber gasket between each follower ring and one end of thebell member, each follower ring having an inner projecting ring portionlocated opposite the vconical opening of the bell member and adapted toforcethe gasket against the conical surface of the bell member and alsoagainst the spigotfmember and:

an outer projecting ring portionlextending over theouter edge of the endof the bell member and having a beveled inner surface against which therubber gasket is pressed bythe end ofthe bell member-when the followeris drawn toward the bell member, the

bellmember'being coned internally with the largest diameter. at itscenter to'permit the ends of the spigot'members free movement laterallywithin the bell member.

3. Ina pipe joint of the kind described, H

a pair of similar, spigot members placed end to end and spaced apart, abell member attached to one end of one of the first spigot members toform an extension thereof and.

extending over the end of the second spigot member, said bellmemberbeing coned. adjacent the end of the first spigot member to permitthe, end of the second'spigot member free movement laterally Within the"bell member, a follower ring surrounding the second spigot memberadjacent the end of the bell member, a rubber gasket between the ends ofthe bell member and, the follower ring, an abutment ring surrounding thefirst splgot member and attached thereto and both extendingbetweenltheabutment ring and the' follower ring and'adapted to hold therubberv gasket between the follower 'ring and the end of the bellmember;

' i MICHAEL QooFFEY,

five cents each, by addressing the Commissioner of Patents Washington,DIGB

